that is when president obama and the other presidents and potentates and princes will come here to south africa. join 90,000 south africans here in the fnb stadium. that is the last place the public saw nelson mandela at the 2010 world cup. he was there. he'll be there in spirit as the country says its farewell to him. there will be three days for his body to lie in state so people can come pay a personal tribute to him. on sunday, he'll be flown about 700 miles home to qunu where he'll be laid to rest in his ancestral village. his history with the united at states. he had a deep impact on our politics before setting foot on our soil. here's jonathan karl with more. on how mandela prodded, consoles, scolded, and inspired american presidents. >> reporter: nelson mandela loomed large in america long before he was freed from prison. ♪ it was 25 years ♪ that take that man away >> reporter: inspiring a mass movement against racism and intolerance. >> apartheid, no. >> freedom, yes. >> reporter: his relationship with u.s. presidents has been far more complicated. when he was locked up in 1